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參數(shù)資料
| 型號： | 935030700602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 放大器 |
| 英文描述： | RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 封裝： | SOT109-1, MS-012AC, SO-16 |
| 文件頁數(shù)： | 19/20頁 |
| 文件大小： | 272K |
| 代理商： | 935030700602 |
Philips Semiconductors
Product specification
SA5209
Wideband variable gain amplifier
1997 Nov 07
8
50
50
50
+5V
SOURCE
OUTPUT
5209
Gain = 19dB + 20log10 VAGC
and is in units of Volts, for VAGC ≤ 1V
where VAGC =
R
2
R
1 ) R2
V
BG
VBG
VAGC
R1
R2
SR00247
Figure 11. User-Programmable Fixed Gain Block
All harmonic distortion products will be
at least -50dBc over the audio spectrum.
50
50
50
+5V
SOURCE
OUTPUT
5209
+5V
RF INPUT
FULL CARRIER
AM (DSB)
MODULATING
SIGNAL
.5V
R9R
VAGC
SR00248
Figure 12. AM Modulator
The high input impedance to the NE5209 makes matching
to crystal filters relatively easy. The total delta gain of this
system will approach 80dB. IF frequencies well into the UHF
region can be configured with this type of architecture.
50
5209
CRYSTAL
GAIN CONTROL
SIGNAL
FILTER
50
OUTPUT
5209
VAGC
SR00249
Figure 13. Receiver AGC IF Gain
RL
5209
RL
±
VS
RS
RT
VAGC
VCC (+5V, unless otherwise noted)
SR00250
Figure 14. Test Set-up 1 (Used for all Graphs)
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